One man was killed and a second seriously injured in a shooting at 91 Florida Street on Tuesday night.

Officers from District C-11 responded to a report of a person shot at the apartment building on the corner of Florida Street and Monsignor Lydon Way around 9:35 p.m. and found two men suffering from gun shot wounds. Myles "Tony" Lawton was shot in the mouth and pronounced dead at the scene. The second man was taken to Boston Medical Center where he remains in critical condition.

Lawton had lived in the apartment building with his longtime girlfriend Theresa Jones, said Jones' three siblings, who had gathered in a nearby apartment on Wednesday morning.

"He was a good man… it's the good people who go so soon," said Carolyn Jones, the oldest of Theresa's three siblings. "But I don't want to say too much, it might be someone right here on the street."

None of Theresa's three siblings, who were all on the scene Wednesday morning, said they had any idea what might have prompted the shooting or knew the second man, who was visiting Lawton on Tuesday night.

Lawton, 62, retired from the Cambridge Police Department over a decade ago and was working in construction. He and Jones had three children together, in addition to Lawton's two children from a previous relationship.

One of those children, a son also named Myles Lawton, became a Boston Police officer in District C-11 last year.

"He wanted to be a cop like his father," said Vanessa Jones, another of Theresa's siblings. "Tony always talked about his son."

Michael Barrett, who lives on Lydon Way, said he drove by the scene shortly after the shooting occurred on Tuesday night and saw paramedics attending to a man on the sidewalk.

"I just said to myself, why does it always feel like this is happening near my street?" said Barrett.

Barry Mullen, an outspoken anti-crime activist and president of the Florida Corridor Neighborhood Association said it was exasperating that police officers are urging residents to make liberal use of the 911 system, but do not have the staff to respond to many of those calls.

"Community policing is a failure because we don't have the policing aspect of it," said Mullen. "All I can do is picture Mayor Menino going on TV and saying the community needs to be more involved, and I don't know what else we can do."